package com.iaiai.tm.activity.widget;

import java.util.List;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

/**
 * 
 * <p>
 * Title: TableView.java
 * </p>
 * <p>
 * E-Mail: 176291935@qq.com
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2012-2-9 下午5:08:15
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class TableView extends LinearLayout {

	private static LayoutParams FILL_FILL_LAYOUTPARAMS = new LayoutParams(LayoutParams.FILL_PARENT,
			LayoutParams.FILL_PARENT, 1);
	private static LayoutParams WAP_WAP_LAYOUTPARAMS = new LayoutParams(LayoutParams.WRAP_CONTENT,
			LayoutParams.WRAP_CONTENT);

	private static Paint BLACK_PAINT = new Paint();
	private static Paint WHITE_PAINT = new Paint();
	static {
		WHITE_PAINT.setColor(Color.WHITE);
		BLACK_PAINT.setColor(Color.BLACK);
	}

	private CAdapter cAdapter;

	/** 标题空间. */
	private LinearLayout titleLayout;
	private String[] title;

	private ListView listView;
	/** 数据. */
	private List<String[]> data;

	/** 列宽数据. */
	private int[] itemWidth;

	/** 当前选中行. */
	private int selectedPosition = -1;
	/** 自动列宽列. */
	private int autoWidthIndex = -1;

	private AdapterView.OnItemClickListener onItemClickListener;

	/** 行背景颜色. */
	private int[] rowsBackgroundColor;
	/** 选中行背景颜色. */
	private int selectedBackgroundColor = Color.argb(200, 224, 243, 250);
	/** 标题背景颜色. */
	private int titleBackgroundColor;
	/** 标题字体颜色. */
	private int titleTextColor = Color.argb(255, 100, 100, 100);
	/** 内容字体颜色. */
	private int contentTextColor = Color.argb(255, 100, 100, 100);
	/** 标题字体大小. */
	private float titleTextSize = 0;
	/** 内容字体大小. */
	private float contentTextSize = 0;

	/**
	 * 初始化带标题ListView
	 * 
	 * @param context
	 *            父级上下文
	 * @param title
	 *            标题数组
	 * @param data
	 *            内容列表
	 */
	public TableView(Context context, String[] title, List<String[]> data) {
		super(context);

		this.title = title;
		this.data = data;

		// 设定纵向布局
		setOrientation(VERTICAL);
		// 设定背景为白色
		setBackgroundColor(Color.WHITE);

		// 预先设定好每列的宽
		this.itemWidth = new int[title.length];
		autoWidthIndex = this.itemWidth.length - 1;
		// 计算列宽
		calcColumnWidth();

		// 添加title位置
		titleLayout = new LinearLayout(getContext());
		titleLayout.setBackgroundColor(Color.parseColor("#CCCCCC"));
		addView(titleLayout);
		// 绘制标题面板
		drawTitleLayout();

		// 添加listview
		listView = new ListView(getContext());
		listView.setPadding(0, 2, 0, 0);
		cAdapter = new CAdapter();
		listView.setAdapter(cAdapter);
		listView.setCacheColorHint(0);
		listView.setLayoutParams(FILL_FILL_LAYOUTPARAMS);
		listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

			public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
				if (onItemClickListener != null)
					onItemClickListener.onItemClick(parent, view, position, id);
				setSelectedPosition(position);
				selectedPosition = position;
				cAdapter.notifyDataSetChanged();
			}
		});
		addView(listView);
	}

	/**
	 * 整体有改变时，刷新显示
	 */
	public void definedSetChanged() {
		calcColumnWidth();
		drawTitleLayout();
		cAdapter.notifyDataSetChanged();
	}

	/**
	 * 设置选中时的监听器
	 * 
	 * @param onItemClickListener
	 */
	public void setOnItemClickListener(AdapterView.OnItemClickListener onItemClickListener) {
		this.onItemClickListener = onItemClickListener;
	}

	/**
	 * 设置行背景颜色, 多个颜色可以作为间隔色
	 * 
	 * @param color
	 *            行背景颜色，可以为多个
	 */
	public void setItemBackgroundColor(int... color) {
		rowsBackgroundColor = color;
	}

	/**
	 * 数据总数
	 */
	public int getCount() {
		if (data == null)
			return 0;
		return data.size();
	}

	/**
	 * 当前选中数据
	 * 
	 * @param position
	 * @return
	 */
	public String[] getItem(int position) {
		if (data == null)
			return null;
		return data.get(position);
	}

	/**
	 * 设置当前选中位置
	 * 
	 * @return
	 */
	public void setSelectedPosition(int selectedPosition) {
		this.selectedPosition = selectedPosition;
	}

	/**
	 * 当前选中位置
	 * 
	 * @return
	 */
	public int getSelectedPosition() {
		return selectedPosition;
	}

	/**
	 * 设置被选中时的背景色
	 * 
	 * @param color
	 */
	public void setSelectedBackgroundColor(int color) {
		selectedBackgroundColor = color;
	}

	/**
	 * 设置标题背景色.
	 * 
	 * @param color
	 */
	public void setTitleBackgroundColor(int color) {
		titleBackgroundColor = color;
		titleLayout.setBackgroundColor(titleBackgroundColor);
	}

	/**
	 * 设置标题文字颜色
	 * 
	 * @param color
	 */
	public void setTitleTextColor(int color) {
		titleTextColor = color;
		for (int i = 0; i < titleLayout.getChildCount(); i++) {
			((TextView) titleLayout.getChildAt(i)).setTextColor(titleTextColor);
		}
	}

	/**
	 * 设置内容文字颜色
	 * 
	 * @param color
	 */
	public void setContentTextColor(int color) {
		contentTextColor = color;
	}

	/**
	 * 设置标题字体大小
	 * 
	 * @param szie
	 */
	public void setTitleTextSize(float szie) {
		titleTextSize = szie;
	}

	/**
	 * 设置内容字体大小
	 * 
	 * @param szie
	 */
	public void setContentTextSize(float szie) {
		contentTextSize = szie;
	}

	/**
	 * 
	 * 设定哪列自动列宽 从0开始计算
	 * 
	 * @param index
	 */
	public void setAutoColumnWidth(int index) {
		autoWidthIndex = index;
		for (int i = 0; i < titleLayout.getChildCount(); i++) {
			TextView tv = ((TextView) titleLayout.getChildAt(i));
			if (i == autoWidthIndex)
				tv.setLayoutParams(FILL_FILL_LAYOUTPARAMS);
			else {
				tv.setLayoutParams(WAP_WAP_LAYOUTPARAMS);
				tv.setWidth(itemWidth[i]);
			}
		}
	}

	/**
	 * 绘制标题
	 */
	private void drawTitleLayout() {
		titleLayout.removeAllViews();
		for (int i = 0; i < title.length; i++) {
			TextView tv = new CTextView(titleLayout.getContext());
			tv.setTextColor(titleTextColor);
			tv.setGravity(Gravity.CENTER);
			tv.setText(title[i]);
			if (titleTextSize > 0) {
				tv.setTextSize(titleTextSize);
			}
			tv.setPadding(5, 0, 5, 0);
			if (i == autoWidthIndex)
				tv.setLayoutParams(TableView.FILL_FILL_LAYOUTPARAMS);
			else {
				tv.setWidth(itemWidth[i]);
			}
			titleLayout.addView(tv);
		}
	}

	/**
	 * 计算列宽
	 * 
	 * @return 是否有改动
	 */
	private boolean calcColumnWidth() {
		boolean result = false;

		float textSize = new TextView(getContext()).getTextSize();

		// 计算标题列宽
		for (int i = 0; i < itemWidth.length; i++) {
			int w = (int) TableView.GetPixelByText((titleTextSize > 0) ? titleTextSize : textSize, title[i]);
			if (itemWidth[i] < w) {
				itemWidth[i] = w;
				result = true;
			}
		}

		// 计算内容列宽
		if (contentTextSize > 0) {
			textSize = contentTextSize;
		}
		for (int i = 0; i < data.size(); i++) {
			for (int j = 0; j < itemWidth.length && j < data.get(i).length; j++) {
				int w = (int) TableView.GetPixelByText(textSize, data.get(i)[j]);
				if (itemWidth[j] < w) {
					itemWidth[j] = w;
					result = true;
				}
			}
		}
		return result;
	}

	/**
	 * 计算字符串所占像素
	 * 
	 * @param textSize
	 *            字体大小
	 * @param text
	 *            字符串
	 * @return 字符串所占像素
	 */
	private static int GetPixelByText(float textSize, String text) {
		Paint mTextPaint = new Paint();
		mTextPaint.setTextSize(textSize); // 指定字体大小
		mTextPaint.setFakeBoldText(true); // 粗体
		mTextPaint.setAntiAlias(true); // 非锯齿效果

		return (int) (mTextPaint.measureText(text) + textSize);
	}

	/**
	 * 主要用的Adapter
	 * 
	 * @author Cdisk
	 * 
	 */
	class CAdapter extends BaseAdapter {

		/*
		 * (non-Javadoc)
		 * 
		 * @see android.widget.Adapter#getCount()
		 */
		public int getCount() {
			if (data == null)
				return 0;
			return data.size();
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see android.widget.Adapter#getItem(int)
		 */
		public Object getItem(int position) {
			if (data == null)
				return null;
			return data.get(position);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see android.widget.Adapter#getItemId(int)
		 */
		public long getItemId(int position) {
			return 0;
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see android.widget.Adapter#getView(int, android.view.View,
		 * android.view.ViewGroup)
		 */
		public View getView(int position, View convertView, ViewGroup parent) {

			// 初始化主layout
			LinearLayout contextLayout = new LinearLayout(TableView.this.getContext());

			String[] dataItem = data.get(position);

			if (getSelectedPosition() == position) { // 为当前选中行
				contextLayout.setBackgroundColor(selectedBackgroundColor);
			} else if (rowsBackgroundColor != null && rowsBackgroundColor.length > 0) {
				contextLayout.setBackgroundColor(rowsBackgroundColor[position % rowsBackgroundColor.length]);
			}

			for (int i = 0; i < title.length; i++) {
				TextView tv = new CTextView(contextLayout.getContext());
				tv.setTextColor(contentTextColor);
				tv.setGravity(Gravity.CENTER);
				if (i < dataItem.length) {
					tv.setText(dataItem[i]);
				}
				if (i == autoWidthIndex)
					tv.setLayoutParams(TableView.FILL_FILL_LAYOUTPARAMS);
				else {
					tv.setWidth(itemWidth[i]);
				}
				if (contentTextSize > 0) {
					tv.setTextSize(contentTextSize);
				}
				contextLayout.addView(tv);
			}

			return contextLayout;
		}

	}

	/**
	 * 重写的TextView
	 * 
	 * @author Cdisk
	 */
	class CTextView extends TextView {

		@Override
		protected void onDraw(Canvas canvas) {
			super.onDraw(canvas);
			// Top
			canvas.drawLine(0, 0, this.getWidth() - 1, 0, WHITE_PAINT);
			// Left
			canvas.drawLine(0, 0, 0, this.getHeight() - 1, WHITE_PAINT);
			// Right
			canvas.drawLine(this.getWidth() - 1, 0, this.getWidth() - 1, this.getHeight() - 1, BLACK_PAINT);
			// Buttom
			canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1, this.getHeight() - 1, BLACK_PAINT);
		}

		public CTextView(Context context) {
			super(context);
		}
	}

}
